Practiced.
The simple past form of "practice" is "practiced."
Practiced is the past tense of practice.
Practiced is the past participle of practice.
The past simple of "have" is "had."
The simple past is had.
Past simple and simple past are both the same thing. They are both the past tense of a verb.
The simple past tense is climbed.
The simple past and past participle are both 'had'.
The simple past and past participle are both brought.
The past participle of practice is practiced.
The simple past tense is studied.
"Listened" is the past simple of "listen" as well as the past participle.